Well, it's been below zero overnight with highs single digits to teens if lucky, this A.M. was 7, went out to fil stove, temp at 179 on 175 set temp., a couple of small peices left-13 hr burn on probabbly 1/2 load( I don't cram in and only load toward rear of firebox mostly so I get max travel through lower refractory chambers). Wood was all splits for indoor stove, 18" lengths. Anyway, filled probably 1/3 cap.reset so unit would call for burn up to 5 deg dif. and went and got paper. Noticed neighbors standard unit putting off mass amounts of steam vs mine with just a trail. Also noticed his wood pile gets considerably smaller( much faster than mine). My very unscientific observation is this, I use a heck of a lot less wood than he. That really doesn't matter as he has tree service drop him wood too- for free. I went gasifier to lessen my workload-feeding and splitting, etc. This next summer, I plan to tweek system a bit with some extra bypass capability and to clean up install a bit. Overall, I would have to recomend the gasifiers to anyone looking for a new OWB. Whether you build or buy is your preference, but I feel the benefits outweigh the drawbacks. This is my $.02 for what it's really worth.